 Lipids: a large and varied group of organic compounds.

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Presentation on theme: " Lipids: a large and varied group of organic compounds."— Presentation transcript:

1  Lipids: a large and varied group of organic compounds. Lipids include:Triglycerides

2  Lipids: a large and varied group of organic compounds. Triglycerides include Phospholipids

3  Triglycerides consist of one molecule of glycerol Triglycerides consist of one molecule of glycerol bonded to three fatty acid molecules Each fatty acid is linked to the glycerol molecule by an ester bondCHOHGlycerolHydroxyl groups

15 2. Buoyancy for marine. animals: lipids are less. dense than water so2. Buoyancy for marine animals: lipids are less dense than water so help animals float3. Insulation: a layer of fat beneath the skin cuts down heat loss

16 Camels’ humps are made of fat4. Production of water: fatty acids produce a lot of metabolic water when they are oxidised during respiratione.g. C17H35COOH + 26 O2  18 CO H2O(a typical fatty acid)Camels’ humps are made of fat